Safety blasting-cap box



A. TURK span smsrmq rm ox Filed "W .20. 1925 Patented May 1 7, 1927 UNITED STATES PATENT OFFICE.

ANTON relax, or :ronNsTowN, PENNSYLVANIA.

sarsry BLASTING-CAI 120x.-

' Application filed May 20, 1925. Serial' No. 31,581.

A further object of the invention is to pro-- vide a box that will overcome all danger of explosion of its, contents due to sparks from electric wires or other sources.

Other objects and advantages of' the invention will be apparent during the course of the following description.

1 In the accompanying drawing forming a part of this specification and in which like.

numerals are employed to designate like parts throughout the same,

Fig. 1 is a rear elevational view, partly 1n section, of the box embodying this invention with a number of blasting caps properly positioned therein,

Fig. 2 is a too plan view, partly in section,

taken on lines II-II of Fig. 1, and

on line TIL-III of Fig. 1.-

In the. drawing, wh'ereinfor. the purpose ofillustration, is shown a preferred'embodiment of this invention, the numeral 5 designates the body portion of the box that is constructed of any suitable insulating material, such as mica or the like, and is preferably of a. substantially solid formation with the exception of any desired number of per-v 'pendicular wells 6 that are adapted for-receiving the blasting caps 7 positioned therein. The bottom face of this body portion is provided with a metallic reinforcing border element or frame 8 that'is secured at its four corners to the body portion by means of the screws 9, as best shown in Figsrl and 3. This border portion is provided'with a rabbet edge 10 that is adapted for receiving a strip .of felt 11 which constitutes a yielding support for the lower ends of the caps 7. The top of the box is provided with a cover that is swingingly connected to the bodyportion 5 by'means of the hinges12andconsists of or lock 16 that is adapted for retaining the cover; in its closed position when desired. As

Fig. 3 is a horizontal sectional view taken a metallic border portion 13 that is provided shown, the block is recessed to partially snugly receive the strips of felt.

It is to be understood that the body portion-5 isconstructed of an insulating mate'- rial, such as mica or the like, for thepurpose of preventing sparks or flame from reaching the caps carried therein. The layers of felt 11 and 15 positioned at the bottom and top faces of the box, when the same is in its closed position, constitute yielding supports for thelower'and upper ends of the caps 7 to prevent any unnecessary shifting of the same.

It is to be understood that the form of this invention herewith shown and described is to be taken as the preferred example of the same, and that various changes in the shape, size, and arrangement. of parts may be resorted to without departing from the spirit of theinvention or the scope of the subjoined claims.

Having thus claim:

1. A safetyblastin cap box comprising a block having a plurality of vertical openings therethroiigh forming cap receiving wells,

described the invention, I a

strips of yielding packing material secured a on the top and bottom of the block and closin the ends of the wells, one of said strips being readily removable-to permit opening of the wells and access to the caps, and open frames attached'to the top and bottom of the block and engaging the margins of the yield.- ing strips for securing the latter in place," one of said frames being readily movable to re"- lease the associated strip and permit opening of the wells and access. to the caps.

'2. A safety blasting cap box comprising a block having a plurality of yertical openings therethrough forming cap receiving wells, sfrips of-yielding packing material secured on the top and bottom of the block and closing the ends of the wells, one of-said strips being readily removable to permit opening of the wells and access to the caps, and open frames attached to the top and bottom of the block and engaging the margins of the yielda ing strips for securingv the'latter in place, one of said frames being readily movable to release the associated strip and permit opening of'the wells and access to the caps, the

block being recessed and the frames being rabbeted, each. for partial snug reception of the yielding-strips. Y J

' In-testimo'ny" whereof I aflix m arroii signature. 

